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4.5.4 AC Wiring Information

When sizing AC wires please adhere to the following information.

Cable Requirements:

Terminal Connection Wire Size Torque Values

GRID 6-4/0 AWG (26.7-107mm²)

95-165 in. lbs. (10.7Nm-

18.6Nm) depending on wire

GEN

Size according to generator

output

95-165 in. lbs. (10.7Nm-

18.6Nm) depending on wire

LOAD

6-4/0 AWG (26.7-107mm²)

95-165 in. lbs. (10.7Nm-

18.6Nm) depending on wire

See wiring diagrams in Section 5 for more information.

Ground-Neutral Bonding

The information below describes the nature of the ground and neutral in the inverter and their relation-

ship to the system. Always consult with your installer or a licensed electrician to ensure that the right

configuration is being used:

• The neutral line is a solid connection between AC input and AC output (known as a Common

Neutral Architecture).

• The neutral line between the AC input and AC output is never disconnected.

• The inverter never creates a ground-neutral bond in any mode of operation.

• The AC grounds, the PV grounds, and the inverter case are all permanently tied together.

Important

The system should have one and only one ground-neutral bond. (This is typically the Main Bonding

Jumper located at the first grid system disconnect.)

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